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PSR-TRISAFE-S
2-4
PHOENIX CONTACT 103503_en_03
2.2 Using the system
The PSR-TRISAFE-S safety module configured with SAFECONF is designed for
monitoring and evaluating safety control devices and safety sensors in machines.
Machinery Directives and various standards and safety regulations require machine or
system manufacturers to meet a high standard of safety.
Safety circuits Safety control devices and safety sensors differ as follows:
Emergency stop control devices can only be detected in the event of dangerous operation
and thus operate in the background. Safety door switches or light grids, for example, are
often required for operational reasons and therefore regularly control the
connection/disconnection of the safety-related part of the machine.
The PSR-TRISAFE-S safety module can be configured flexibly. For the creation of the
safety logic, it has safe functional blocks, which are part of the system. The
PSR-TRISAFE-S can be used to implement various safety functions in different safety
circuits. Some of the most important options are:
– Emergency stop monitoring
– Safety door monitoring (with and without guard locking)
– Two-hand control devices (Types II and III)
– External device monitoring (feedback monitoring)
– Monitoring and checking electrosensitive protective equipment
– Mode selector switch (evaluation of a mode selector switch and an enable switch)
– Muting applications (light grid monitoring with parallel muting)
Stop category 0 Depending on the safety logic configured for the actual application, PSR-TRISAFE-S safety
module outputs can be used to stop machines/drives with stop category 0 according to
DIN EN 60204-1.
DIN EN 60204-1 defines stop category 0 as uncontrolled stopping by immediate removal of
power to a machine.
Whether a safe output meets stop category 0 depends on the safe functional blocks
connected in the safety logic: only if the module output is connected directly to the enable
output of a safe functional block, which executes stop category 0 at its output, can the
module output also meet this category.
Example The EmergencyStop functional block executes stop category 0 at its enable output. If this
block output is connected directly to a module output, the safety module also executes stop
category 0 at this output.
Figure 2-3 on page 2-7 shows an example of this type of connection.
Equipment on the
machine
The configuration and startup of the relevant safety circuit must be planned and verified
precisely. Different machines are subject to different requirements for the implementation of
a safety function.
The term "machine" is used here to represent any technical systems according to
Machinery Directive 2006/42/EC.